Air Conditioner help.

[lewain]

So, yesterday my A/C stopped working. I have a Vintage A/C system installed. I opened the hood to check it out and immediately noticed that the connection (which is a plug) going to the compressor had separated. So, I plugged it back together and clutch engaged again for a short period of time. Drove home with A/C off. Trouble shooting I have determined that that power is not getting through my binary pressure switch. I don’t have any gauges to check pressure. Is there anything else that I can do or should I just get to an A/C shop?

 

[EPB72]

Knowing pressures kinda a must for diagnosing what’s going on .. maybe a leak or was never filled properly ? Access to the the evaporator inlet and outlet for direct temp readings is a indicator of correct system volume of refrigerant in these made up systems with a multitude of parts being used,, but knowing pressures and what the switch set points are would help, winter and cold temps can affect compressor on time as well

 

[serial car restorer]

Without gauges to check, you're stuck. It's probably low pressure due to a refrigerant leak. That's exactly what the binary switch is supposed to do.

 

[lewain]

I decided to take it to an A/C mechanic rather than purchasing some gauges and an evap pump.